Knowing the angle of the camera
With your camera selected open the properties panel (N) and take a look at the top part, the Transform section.


Here you can see, and change, the exact location and rotation of your camera. (Or any active object, not just the camera.)

You can get to the same information my going to the Object tab of the properties window, I just prefer to stay in the 3D view.

So for your two scenes, you can simply pick a location and orientation that you like, then copy the transformational values to your other camera.